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Putri E, Purnama DW, Maulida I. THE INFLUENCE OF SUBSTITUTION DRILLS TOWARD STUDENTS’ SIMPLE PRESENT TENSE MASTERY. sendinusa [Internet]. 2020 Feb. 7 [cited 2024 Apr. 23];1(1):169-73. Available from: http://ejournal.unsub.ac.id/index.php/sendinusa/article/view/660